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fredd [130]
3 years ago
10

The 5 digit number 5abc9 is the square of an integer where a, b, and c represent a missing digit. If all five digits are differe

nt, what is the five-digit number?
Advanced Placement (AP)
2 answers:
frozen [14]3 years ago
4 0

54289 = 233^2

You know the last digit of the squared number is 3 or 7, so just try numbers ending with those from 220 to 250

saul85 [17]3 years ago
4 0

Answer:

54289.

Explanation:

The square root will be a 3 digit number and as the last digit of the given number is 9  the last digit of the square root will be a 3 or a 7.

√50000 = 223.6 and  the √60000 = 244  so we try the following numbers:

243^2 = 59049   NO

237^2 = 56169.   NO

233^2 = 54289   YES.

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